string(239) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E4%BC%9A%E8%80%83%E8%AF%95%E5%BB%BA%E8%AE%AE%E9%A1%BA%E5%BA%8F => Failed to connect to 101.91.112.32 port 38221: Connection refused"
注会考试建议顺序
